package com.example.john.recyclerviewlwn408.adapter;


        import android.content.Context;
        import android.support.v7.widget.RecyclerView;
        import android.view.LayoutInflater;
        import android.view.View;
        import android.view.ViewGroup;
        import android.widget.Button;
        import android.widget.ImageView;
        import android.widget.TextView;
        import android.widget.Toast;

        import com.example.john.recyclerviewlwn408.R;
        import com.example.john.recyclerviewlwn408.bean.ArticleBean;
        import com.squareup.picasso.Picasso;

        import java.util.List;

/**
 * Created by yubo on 2017/4/13.
 */

public class MyAdapter extends RecyclerView.Adapter {
    private Context context;
    private LayoutInflater layoutInflater;//动态加载布局
    private List<ArticleBean> list;//保存要显示的数据
    //自定义 构造方法 传进上下文
    public MyAdapter(Context context) {
        this.context=context;
        layoutInflater=LayoutInflater.from(context);
    }
    //自定义：获取数据
    public  void setList(List<ArticleBean> list){
        this.list=list;
    }
    //自定义：ViewHodler子类
    public class ViewHolder extends RecyclerView.ViewHolder{
        private ImageView imageView;
        private TextView tvtitle, tvdescript,tvtime;
        private Button button;
        public ViewHolder(View itemView) {
            super(itemView);
            imageView = (ImageView) itemView.findViewById(R.id.imageView);
            tvtitle = (TextView) itemView.findViewById(R.id.textView);
            tvdescript = (TextView) itemView.findViewById(R.id.textView2);
            tvtime = (TextView) itemView.findViewById(R.id.textView3);
            button = (Button) itemView.findViewById(R.id.button);
        }


    }
    //重写：生成Itemde1View
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v=layoutInflater.inflate(R.layout.item,parent,false);
        return new ViewHolder(v);
    }
    //重写 给ViewHodler中的控件填充值 设置监听
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        ArticleBean articleBean = list.get(position);
        if (articleBean == null)
            return;


        final ViewHolder viewHolder = (ViewHolder) holder;

        viewHolder.tvtitle.setText(articleBean.getName());
        viewHolder.tvdescript.setText(articleBean.getDescription());
        viewHolder.tvtime.setText(articleBean.getThumb());


        //皮卡搜
        // context已经定义了？？？？ load下载？？？是一个相对地址
        Picasso.with(context)
                .load("http://amicool.neusoft.edu.cn/Uploads/"//网络地址
                        + articleBean.getThumb())
                .placeholder(R.mipmap.ic_launcher)
                .into(viewHolder.imageView);//往哪里放  比如说放一个自己的图片
        viewHolder.button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                //获取当前条目信息   如id
                int id = list.get(position).getId();
                Toast.makeText(context, "" + id, Toast.LENGTH_SHORT).show();
                //实际中 点击后开新窗口做其他条件


            }

        });

    }




    //共由多少条目
    @Override
    public int getItemCount() {
        //改动
        if(list==null) return 0;
        else
            //程序崩溃了 可能 if(list==null) return 0;
            // else没加  控指针错误


            return list.size();

    }
}